Sql 定义变量时，标识符无效。欧几里德距离

oracle一直拒绝我在with子句中尝试调用的任何内容

 WITH params as (
      SELECT -28 as lat, 151 as lon
      FROM dual
     )
SELECT sighting_id 
FROM sightings 
ORDER BY sqrt(power(lat - latitude, 2) + power(lon - longitude, 2));

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在WITH中定义参数，但从不在FROM中引用它

WITH params as (
      SELECT -28 as lat, 151 as lon
      FROM dual
     )
SELECT sighting_id 
FROM sightings CROSS JOIN params 
ORDER BY sqrt(power(lat - latitude, 2) + power(lon - longitude, 2));

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向我们展示您的数据库模式。请阅读，这里是学习如何提高问题质量和获得更好答案的好地方。